Vest for supporting a broken arm sling



FIG. 1 is a front elevational view of the vest for supporting a broken arm sling showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a left view thereof; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a vest for supporting a broken arm sling, as shown and described. 